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Issue 74, 2017, Issue in Progress
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Synthesis and characterization of cobalt hydroxide carbonate nanostructures

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Abstract

Battery-type electrodes of three-dimensional (3D) hierarchical cobalt hydroxide carbonate arrays on Ni foam were fabricated using a hydrothermal method for use in supercapacitors. X-ray diffraction analysis, scanning electron microscopy, and transmission electron microscopy were used to characterize their structures and morphologies. The cobalt hydroxide carbonate synthesized with 10 h reaction time showed the highest specific capacitance (1381 F g−1 at a current density of 2 A g−1) and excellent cycling stability (92% capacitance retention after 5000 cycles). Moreover, its capacitance increased by 33% at 2 A g−1 and by 10% at 20 A g−1 after 5000 charge–discharge cycles. This cobalt hydroxide carbonate composite is a promising candidate for electrochemical energy-related applications.

Graphical abstract: Synthesis and characterization of cobalt hydroxide carbonate nanostructures

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Article information


Submitted
16 Aug 2017
Accepted
20 Sep 2017
First published
04 Oct 2017

This article is Open Access

RSC Adv., 2017,7, 46925-46931
Article type
Paper

Synthesis and characterization of cobalt hydroxide carbonate nanostructures

X. Lin, H. Li, F. Musharavati, E. Zalnezhad, S. Bae, B. Cho and O. K. S. Hui, RSC Adv., 2017, 7, 46925
DOI: 10.1039/C7RA09050A

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